background: millions of workers are the victims of different kinds of accidents every year throughout the world. the purpose of this study was to investigate the relationships between safety attitude and occurrence of the occupational accidents. methods: this investigation was a cross-sectional study performed in a gas refinery in south of iran in 2008. sample size of this study was 176 people....

OBJECTIVE Many studies have been conducted in order to evaluate the genotoxicity of chemicals and waste materials, which utilized in vivo test protocols. The use of animals for routine toxicity testing is now questioned by a growing segment of society. METHODS Keeping the above fact in mind, we have conducted in the present study the genotoxicity evaluation of oily sludge samples generated fr...

The objective of this paper is the development and solution of nonlinear and mixed-integer (MIP) optimization models for real-world planning and scheduling problems in petroleum refineries. Firstly, we present a nonlinear planning model that represents a general refinery topology and allows implementation of nonlinear process models as well as blending relations. The optimization model is able ...

Histopathological diagnoses were compiled for 100 sinonasal cancers and 259 lung cancers in nickel refinery workers, including cases from Wales, Canada, and Norway. The sinonasal cancers comprised squamous cell carcinomas (48 percent), anaplastic and undifferentiated carcinomas (39 percent), adenocarcinomas (6 percent), transitional cell carcinomas (3 percent), and other malignant tumors (4 per...

this study aims to inspect the performance of the wastewater treatment system of the pars oil refinery. quantity and quality of wastewater are determined through samplings and measurements. the performance of system is evaluated considering total suspended solids, total dissolved solids, phosphate, chemical oxygen demand, biochemical oxygen demand, ammonia nitrogen, furfural, oil and ph. for pr...

background: the objectives of this paper are three folds. first, an integrated framework for designing and development of the integrated health, safety and environment (hse) model is presented. second, it is implemented and tested for a large gas refinery in iran. third, it is shown whether the total ergonomics model is superior to the conventional ergonomics approach. this study is among the f...

In this paper, reduced nonlinear refinery models are developed by generating and using input-output data from a process simulator. In particular, rigorous process models of continuous catalytic reformer (CCR) and nfaphtha splitter units are used for generating the data. To deal with complexity associated with large amounts of data, that is usually available in the refineries, a disaggregation-a...

Process monitoring within a refinery control room can be both daunting and listless. The workload of control room operators can fluctuate greatly over a short period of time. It would be ideal if systems could automatically detect these changes in workload so that both the computer system and those supervising are made aware of instances when an operator might be overloaded. While eye tracking ...